JP6964452B2 - Measuring machine management system and program - Google Patents

Description

The present invention relates to a measuring machine management system that manages and analyzes various recorded data in a measuring machine, and in particular, a measuring machine management that estimates maintenance and parts replacement of the measuring machine by analyzing various recorded data and executes processing. Regarding the system.

Conventionally, various measuring machines for measuring the shape and dimensions of an object to be measured have been used. As such a measuring machine, for example, a roundness measuring device and a surface texture measuring machine are known. Roundness measuring devices and surface texture measuring machines detect the vertical movement of the stylus that occurs when the surface of the object to be measured is traced with a stylus with a sharp tip, and based on this, the unevenness and properties of the surface of the object to be measured are detected. taking measurement. At the time of measurement, the stylus moves in physical contact with the surface of the object to be measured, so that the tip of the stylus wears according to the history of use. Wearing the stylus reduces measurement accuracy. As the wear progresses, the measurement accuracy deteriorates beyond the acceptable limit, so the stylus has a limited life and needs to be maintained or replaced at the appropriate time.

Therefore, in order to encourage the stylus to be replaced at an appropriate timing, a measuring device has been proposed that detects the moving distance of the stylus and notifies the replacement time when the cumulative moving distance exceeds the threshold value (see, for example, Patent Document 1). ). However, whether or not to exchange in response to such a notification depends on the judgment of the user or administrator of the measuring instrument. Also, when trying to replace the stylus, a replacement stylus may not be readily available, in which case the measurement accuracy may be sacrificed or the measurement may have to be abandoned. there were.

Japanese Unexamined Patent Publication No. 2011-169616

In view of such a problem, an object of the present invention is to provide a measuring machine management system capable of facilitating the management of the measuring machine.

In order to solve the above problems, the measuring machine management system of the present invention uses a collecting means for collecting condition information indicating the state of replacement parts in each measuring device and a collecting means for collecting the condition information collected by the collecting means from a plurality of measuring devices. It is provided with a prediction means for predicting the replacement time of replacement parts based on the above.

In the present invention, it is preferable to further provide a notification means for notifying the production department of information on the time and quantity of replacement parts required based on the prediction result by the prediction means. In addition, it is preferable to notify the production department of information on the production plan of the replacement parts based on the prediction result by the prediction means and the inventory amount of the replacement parts. It is preferable that the condition information is not the measurement data itself in the measuring device.

In the present invention, the measuring device is, for example, a roundness measuring device, in which case the replacement part may be a stylus. The condition information may be the contact movement distance obtained by accumulating the distance traveled by the stylus in contact with the object to be measured.

The program according to the present invention is characterized in that the computer functions as any of the above-mentioned measuring machine management systems.

An example of the overall configuration of the measuring machine management system is shown. It is a block diagram which shows the structure of a server. The external view of the roundness measuring device to be managed by the measuring machine management system is shown. The mechanical coordinate system of the roundness measuring device is shown. It is a block diagram which shows the structure of the control device main body of a roundness measuring device. It is a schematic diagram which shows the movement path of the tip of a stylus on an object to be measured. It is a flowchart which shows the procedure of the contact movement distance accumulation processing. It is a schematic diagram which illustrates the urging state to a stylus. An example of the notification screen is shown. An example of the reset history display screen is shown.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same members are designated by the same reference numerals, and the description of the members once described will be omitted as appropriate.

[System configuration]
FIG. 1 shows the measuring machine management system 1 according to the present embodiment together with a plurality of measuring machines 4 to be managed by the measuring machine management system 1. As shown in FIG. 1, the measuring machine management system 1 includes a server 2 connected to the measuring machine 4 to be managed via a network NW. In the present embodiment, a case where the measuring machine 4 managed by the measuring machine management system 1 is a roundness measuring device will be described as an example. The measuring device 4 may be a measuring device other than the roundness measuring device.

The server 2 is, for example, a computer system, and is an input / output device such as a keyboard, a mouse, and a touch panel, a calculation unit such as a CPU (Central Processing Unit), and a storage device such as a RAM (Random Access Memory) and a ROM (read only memory). It is composed of a main body equipped with a CRT (Cathode Ray Tube), a display device such as an LCD (Liquid Crystal Display), and the like.

As shown in FIG. 2, the server 2 includes at least a storage unit 201, a control unit 202, and a communication unit 203. The storage unit 201 of the server 2 stores a program executed by the control unit 202, data used in the program, and the like. For example, the storage unit 201 has a condition data collected from the measuring device 4, a prediction program that analyzes the condition data to predict the replacement time of the replacement part, and various actions (for example, notification of the replacement time) based on the prediction result by the prediction program. Store the action program, etc. that executes the inventory check of replacement parts, ordering of replacement parts, etc.).

The control unit 202 executes processing according to the program stored in the storage unit 201. The communication unit 203 provides a function for connecting to the network NW in order to communicate with the measuring device 4.

The server 2 does not have to be physically integrated with each of the above configurations. For example, some or all of the above components may be distributed and arranged, and they may cooperate with each other to function as the server 2.

[Structure of roundness measuring device]
FIG. 3 shows an external view of the roundness measuring device 4 to be managed by the measuring machine management system 1. In the figure, the roundness measuring device 4 includes a roundness measuring device main body 10 as a measuring means and a control device 50.

The roundness measuring device main body 10 includes a base 12, a rotary table 14 rotatably installed on the base 12 in the direction of arrow A, and a position adjusting means 16 for adjusting the position of the rotary table 14 in the X direction. The position adjusting means 18 for adjusting the Y-direction position, the tilt adjusting means 20 for adjusting the X-direction tilt of the mounting surface, the tilt adjusting means 22 for adjusting the Y-direction tilt amount, and the rotary table 14 are mounted. A detector 26 having a stylus 27 as a stylus 27 as a stylus 27 capable of contact-detecting the surface position of the object to be measured 24, a detector holder 40 holding the detector 26, and a detector holder 40 are attached to the tip. The arm 42, the stylus moving means 28 for moving the stylus 27 in the horizontal direction by driving the arm 42 in the horizontal (X-axis) direction indicated by the arrow B, and the vertical (Z) stylus moving means 28 indicated by the arrow C. Includes a stylus moving means 30 that moves the stylus 27 in the vertical direction by moving it in the axial direction.

In the detector 26, the stylus 27 is urged by an urging means (not shown) so that its axial direction is slightly tilted toward the object to be measured 24 with respect to the Z-axis direction. The detector 26 obtains measurement data by detecting the displacement of the stylus 27 when the stylus 27 is brought into contact with the surface of the object to be measured 24 and moved relative to the surface. The measurement data obtained by the detector 26 is sent to the control device 50 that controls the operation of the entire roundness measuring device 4. The polarity of the measurement data detected by the detector 26 is defined as a positive displacement of the tip of the stylus 27 in the direction away from the object 24 in the measurement in which the stylus 27 is brought into contact with the outer peripheral surface of the object 24 to be measured. And.

As shown in FIG. 4, the roundness measuring device 4 constructs a mechanical coordinate system with the intersection of the upper surface of the rotary table 14 and the center axis of rotation of the table as the XZ origin by calibration. The X position and Z position (collectively referred to as XZ position) of the tip of the stylus 27 can be acquired based on the position of the stylus 27 moved by the stylus moving means 28 and the stylus moving means 30 and the displacement detected by the detector 26.

The control device 50 is composed of a control device main body 52, an operation unit 54, and a display unit 56 that execute various arithmetic processes and control processes. As shown in FIG. 5, the control device main body 52 is mainly a CPU 60. , RAM 62, ROM 64, HDD 66, and display control unit 68. The HDD 66 is connected to the CPU 60 via the I / F 70. Further, the operation unit 54 is also connected to the CPU 60 via the I / F 72, and the code information and the position information input from the operation unit 54 are input to the CPU 60 via the I / F 72. The CPU 60 is also connected to the display unit 56 via the display control unit 68, and various screens, measurement results, and the like are displayed on the display unit 56 under the control of the display control unit 68 based on the display instruction from the CPU 60. The CPU 60 is also connected to the roundness measuring device main body 10 via the I / F 74, and controls the drive of the rotary table 14, the stylus moving means 28, 30, the detector 26, etc. via the I / F 74. The control signal is transmitted to the roundness measuring device main body 10, and the measurement data obtained by the detector 26 is input to the CPU 60. The input measurement data is stored in the HDD 66 via the RAM 62 or the I / F 70. The control device 50 analyzes this measurement data to obtain geometrical tolerances such as roundness and straightness.

Various programs such as a control program for controlling the roundness measuring device 4 are stored in the RAM 62, the ROM 64, and the HDD 66. In the present embodiment, the control program incorporates a function of executing the contact movement distance accumulation process. The HDD 66 also stores a part program P for instructing a series of measurement procedures created by the user. In the present embodiment, the CPU 60 appropriately reads and executes these programs and the part program P to manage the usage history of the measurement control means 60A that controls the measurement operation in the roundness measuring device 4 and the stylus 27. It functions as a history management means 60B.

The part program P is a program for numerically controlling the movement and measurement of each axis by the control device 50. By defining a plurality of types of measurements in the program, a plurality of types of measurements can be performed in order. It is also possible to go to and find multiple geometrical tolerances. The roundness measuring device 4 includes, for example, the roundness of the rotating outer surface, the roundness of the rotating inner surface, the flatness of the rotating upper surface, the flatness of the rotating lower surface, the straightness of the linear motion outer surface, and the straightness of the linear motion inner surface. It is possible to measure geometrical tolerances such as the straightness of the upper surface of the linear motion, the straightness of the lower surface of the linear motion, the cylindricity of the outer and inner surfaces of the spiral, and the flatness of the upper and lower surfaces of the spiral.

That is, when the stylus 27 is moved in the horizontal direction by the stylus moving means 28, it comes into contact with the outer peripheral surface of the object to be measured 24 placed on the rotary table 14. By rotating the rotary table 14 in this state or moving the stylus 27 in the vertical direction by the stylus moving means 30, the detector 26 can measure the outer peripheral surface of the object to be measured 24. In the control device 50, the stylus 27 is brought into contact with the outer peripheral surface of the object to be measured 24 in this way, and the roundness (roundness of the rotating outer surface) and the stylus 27 are obtained from the measurement data obtained by rotating the rotary table 14. The straightness (straightness of the linear motion outer surface) is obtained from the measurement data obtained by moving the stylus in the vertical direction.

Further, the stylus moving means 28 and 30 move the stylus 27 in the horizontal direction and the vertical direction to bring it into contact with the upper surface of the object to be measured 24, and the rotary table 14 is rotated in this state, or the stylus 27 is moved by the stylus moving means 28. By moving the stylus in the horizontal direction, the detector 26 can measure the upper surface of the object to be measured 24. In the control device 50, the stylus 27 is brought into contact with the upper surface of the object to be measured 24 in this way, and the flatness (flatness of the rotating upper surface) and the stylus 27 are moved in the vertical direction from the measurement data obtained by rotating the rotary table 14. The straightness (straightness of the linear motion upper surface) is obtained from the measurement data obtained by moving.

Further, in the present embodiment, the detector 26 has a rotation mechanism (not shown) in a predetermined angle range (for example, from 0 degrees to 270 degrees in 1 degree units) about the direction indicated by the arrow D, that is, the Z-axis direction. It is rotatable. As a result, the stylus 27 can also be brought into contact with the inner peripheral surface of the cylindrical object to be measured 24, and the stylus 27 can be detected by rotating the rotary table 14 or moving the stylus 27 in the vertical direction by the stylus moving means 30. The device 26 can also measure the inner peripheral surface of the object to be measured 24. Then, in the control device 50, the stylus 27 is brought into contact with the inner peripheral surface of the object to be measured 24 in this way, and the roundness (roundness of the rotating inner surface) is determined from the measurement data obtained by rotating the rotary table 14. The straightness (straightness of the linear motion inner surface) is obtained from the measurement data obtained by moving the stylus 27 in the vertical direction.

Further, the detector holder 40 is mounted on the arm 42 so as to be rotatable 90 degrees about the X axis, and the posture of the detector holder 40 can be changed vertically and horizontally. Note that FIG. 3 shows a state in which the posture of the detector holder 40 is vertical. By laying the posture of the detector holder 40 sideways and rotating the detector 26, it seems that the lower surface of the object to be measured 24 (for example, a cylinder or a central portion of the cylinder is provided with a large diameter portion having a diameter larger than the lower end surface). The stylus 27 can also be brought into contact with the lower surface of the large-diameter portion of the object to be measured 24), and the stylus 27 is rotated or the stylus is moved by the stylus moving means 28. By moving 27 in the horizontal direction, the detector 26 can also measure the lower surface of the object to be measured 24. Then, in the control device 50, the stylus 27 is brought into contact with the lower surface of the object to be measured 24 in this way, and the flatness (flatness of the rotating lower surface) and the stylus 27 are moved up and down from the measurement data obtained by rotating the rotary table 14. The straightness (straightness of the lower surface of the linear motion) is obtained from the measurement data obtained by moving in the direction.

In the control device 50, an appropriate geometrical tolerance is selected and calculated according to the type of the measured surface (outer surface / inner surface / upper surface / lower surface, etc.) and the type of movement (rotation / linear motion, etc.). The measurement of the roundness measuring device 4 is not limited to geometrical tolerances other than the above, and other geometrical tolerances and the like may be measured.

[History record]
In the roundness measuring device 4 of the present embodiment, in addition to various measurements as described above, the contact movement distance obtained by accumulating the distance traveled by the stylus 27 in contact with the object 24 to be measured is obtained and recorded in the HDD 66. In the roundness measuring device 4, the contact movement distance is recorded for each individual stylus 27. The stylus 27 attached to the detector 26 may be identified by a user setting. The contact movement distance is an example of condition data.

As shown in FIG. 6, in the roundness measuring device 4, the rotary table 14 rotates to the clock tower with the tip of the stylus 27 in contact with the object to be measured 24, and the stylus 27 is raised by the stylus moving means 30. It is assumed that the stylus is moved in the direction (Z-axis direction). At this time, the path that the stylus 27 traveled in contact with the object to be measured 24 is represented by a broken line. The contact movement distance is the sum of the lengths of the paths that the stylus 27 has moved in contact with the object to be measured 24.

The roundness measuring device 4 continues to acquire the XZ position of the tip of the stylus 27 and the rotation angle θ of the rotary table 14 (hereinafter, these are collectively referred to as relative position data) at a predetermined cycle. In FIG. 6, the position where the relative position data is acquired is illustrated by a black circle. When the tip of the stylus 27 is in contact with the object to be measured 24 at the timing when two consecutive sets of relative position data are acquired, between the positions of the stylus tips indicated by the two sets of relative position data. The contact movement distance is calculated by accumulating the distances of. The shorter the cycle for acquiring the relative position data, the closer the calculated movement distance is to the actual movement distance. The measurement cycle may be determined according to the required accuracy, and may be, for example, about 100 ms cycle.

Subsequently, the procedure of the contact movement distance accumulation processing will be described with reference to the flowchart shown in FIG. The following processing is executed by the CPU 60 of the control device 50 executing the control program. If the subject of the process is not specified, it should be understood that the process is performed by the CPU 60 of the control device 50 executing the control program. When the control program is started after the power of the roundness measuring device 4 is turned on, the function of executing the contact movement distance accumulation process incorporated in the control program is started accordingly. Therefore, the contact movement distance is constantly monitored and accumulated regardless of whether or not the measurement is performed. After the power of the roundness measuring device 4 is turned on, the stylus 27 is the object to be measured 24 between the time when the control program is started and the time when the control program is terminated before the power is turned off after performing a series of measurements. It is assumed that they repeatedly come into contact with the object to be measured and move away from the object to be measured 24. The roundness measuring device 4 of the present embodiment accumulates only the moving distance during the period in which the stylus 27 is in contact with the object to be measured 24 in order to record the accurate contact moving distance according to the following flow.

When the contact movement distance accumulation process is started, the control program executed by the CPU 60 initializes various conditions in order to accumulate the contact movement distance in the new measurement with the contact movement distance accumulated so far. Specifically, the control program reads the contact movement distance accumulated so far from the HDD 66, turns off the previous contact flag indicating the contact state at the timing when the immediately preceding relative position data is acquired, and sets the relative position data to the initial state (the initial state (). For example, the XZ position at the tip of the stylus 27 and the rotation angle θ of the table are both zero) (step S100). Subsequently, the latest relative position data is acquired (step S110).

Subsequently, the control program determines whether or not the stylus 27 and the object to be measured 24 are in contact with each other (step S120). An example of a method for determining whether or not they are in contact will be described below. As described above, the stylus 27 attached to the detector 26 is urged by a spring or the like so as to be slightly tilted toward the object to be measured 24. FIG. 8 illustrates an urging state of the stylus 27 in the measurement in which the stylus 27 is brought into contact with the outer peripheral surface of the object to be measured 24. As shown in FIG. 8, when the stylus 27 is not in contact with the object to be measured 24, the tip of the stylus 27 is displaced by the urging force in the direction in which the object to be measured 24 is located (leftward in the example of FIG. 8, displacement amount). The displacement amount of the stylus 27 is outside the detection range R by the detector 26 (even if the maximum measurement range is selected, the direction of contact with the object to be measured 24 (minus direction)). It becomes the value) that is completely displaced to the side). Therefore, in the control program, the output value of the displacement detector that detects the displacement amount of the stylus 27 in the maximum measurement range (that is, the lowest magnification) is a value that swings in the direction of contact with the object 24 to be measured. In this case, it is determined that the stylus 27 and the object to be measured 24 are not in contact with each other.

In addition, in FIG. 8, the case of the measurement in which the stylus 27 is brought into contact with the outer peripheral surface of the object to be measured 24 is illustrated, but in the case of the measurement in which the stylus 27 is brought into contact with the inner peripheral surface of the object to be measured 24, the stylus 27 is urged. The direction and the direction in which the measurement range for determining the non-contact state can be shaken off are appropriately selected. For example, when measuring the inner peripheral surface of the object to be measured 24, the direction of urging and the direction of swinging the measurement range for determining the non-contact state are opposite to those in FIG. Further, when measuring the upper surface or the lower surface of the object to be measured 24, the stylus 27 is subjected to a downward or upward urging force while the detector holder 40 is rotated 90 degrees, and the urging force is applied. It may be determined that the stylus 27 is not in contact with the object to be measured 24 when the displacement amount is completely shaken in the direction in which the object to be measured 24 is located (that is, the direction in which the object to be measured 24 is located).

Returning to FIG. 7, when it is determined that the stylus 27 and the object to be measured 24 are not in contact with each other (S120; No), the control program turns off the previous contact flag (step S130) and shifts the process to S170. When the contact flag is off last time, the contact movement distance is not accumulated regardless of whether the stylus 27 and the object to be measured 24 are currently in contact with each other. Further, by turning off the previous contact flag when the stylus 27 and the object to be measured 24 are not in contact with each other, even if the stylus 27 is in contact with the object to be measured 24 at the timing of acquiring the next relative position data. , Avoid accumulating contact movement distances.

On the other hand, when it is determined that the stylus 27 and the object to be measured 24 are in contact with each other (S120; Yes), the control program determines whether or not the previous contact flag is on (step S140). If the previous contact flag is not on (off) (S140; No), the control program moves the process to step S160. That is, even if the stylus 27 is in contact with the object to be measured 24 at the present time, the contact movement distance is not accumulated if the stylus 27 is not in contact with the object 24 last time.

On the other hand, when the contact flag is on (S140; Yes), the control program calculates the movement distance from the current and previous relative position data, adds the movement distance to the contact movement distance (step S150), and then , The process is moved to step S160. The locus of the tip of the stylus 27 moving on the surface of the object to be measured 24 during the measurement of the current and previous relative position data depends on which of the stylus moving means 28, 30 and the rotary table 14 has moved. , As shown in Table 1, it can be a straight line, an arc, or an arc.

Therefore, the control program calculates the moving distance based on the previous and current relative position data and which of the stylus moving means 28 and 30 and the rotary table 14 was moving in step S150.

In step S160, the control program turns on the previous contact flag and updates the previous stylus tip position and the previous table angle with the current values. (Step S160). In step S160, in the loop in which steps S110 to S170 are repeatedly executed, the data is updated in preparation for the next processing. Subsequently, the control program determines whether or not the control program has entered the termination process (step S170). When entering the termination process (step S170; Yes), the control program saves the latest contact movement distance in the HDD 66 (step S180) and terminates the process. On the other hand, if the process has not been completed (step S170; No), the control program returns the process to step S110 and continues the process. The control program may save the cumulative movement distance in the HDD 66 at any time (for example, each time step S150 is executed) at a timing other than step S180.

As described above, the roundness measuring device 4 can obtain and record the contact movement distance by accumulating the distance traveled by the stylus 27 in contact with the object to be measured 24.

[Utilization of contact movement distance]
The recorded contact movement distance is displayed on the display unit 56 based on the operation by the user or automatically. For example, when the user selects the contact movement distance display menu in the operation program of the roundness measuring device 4, the notification screen as shown in FIG. 9 is displayed. That is, on the notification screen, the stylus 27 and its contact movement distance are displayed in association with each other. In this way, the user can refer to the usage history of each stylus 27 at a desired timing and estimate the degree of deterioration due to wear. Further, it is preferable to set a threshold value for each stylus 27 and automatically display the screen as shown in FIG. 9 when the contact movement distance reaches the corresponding threshold value. In this way, the user can be prompted to replace the stylus 27 at the timing when the stylus 27 should be replaced. The notification screen may be displayed with the currently installed stylus 27 selected. When the stylus 27 is replaced or the like, the contact movement distance may be reset to zero by pressing the reset button B1 on the notification screen. The roundness measuring device 4 may record the date and time when the reset is performed and the contact movement distance each time the reset operation is performed. When the reset history display button B2 is pressed on the notification screen, the reset history display screen as shown in FIG. 10 displays the date and time when the selected stylus 27 was reset in the past and the contact movement distance at the time of reset in association with each other. It is good to do it. In this way, the user can know the reset history, and can estimate the deterioration status of the stylus 27 used in the measurement performed in the past.

In the measuring machine management system 1, the server 2 collects and manages the contact movement distance from a plurality of measuring machines (roundness measuring devices) 4. The server 2 analyzes the contact movement distance collected from each measuring device and predicts the scheduled replacement time of each stylus 27. Further, the server 2 may notify the production department of information regarding the time and amount of the stylus required based on the expected replacement time of the stylus 27. Further, the server 2 may refer to the stylus inventory management system (not shown) connected via the network NW, and notify the production department of information on the stylus production plan according to the stylus inventory amount. For example, if it is expected that the stylus will be out of stock at the time of replacement, it is advisable to give a notice urging the production of the stylus to be increased in order to increase the availability at the time of replacement. By comprehensively managing the measurement history information of multiple measuring machines in this way, it is possible to predict when consumables will be provided, and it is possible to shorten the lead time until replacement while suppressing the number of inventories. Become.

Further, by limiting the data collected by the server 2 to the information related to the condition of the measuring machine, it is possible to reduce the labor and cost related to the security management of the user's customer information and the confidential measurement data, and further, communication. And the amount of data to be recorded can be reduced.

[Modified example of the embodiment]
Although the present embodiment has been described above, the present invention is not limited to this example. For example, in the above embodiment, the case where the roundness measuring device is used as the measuring machine has been described as an example, but the measuring machine may be a person other than this. For example, it may be a surface texture measuring device that performs measurement using a stylus like a roundness measuring device, or a probe microscope (scanning type) that performs measurement by moving a probe along the surface of an object to be measured. It may be a tunneling microscope, an atomic force microscope, etc.). In addition, any measuring machine may be used as long as it requires replacement parts and maintenance. Examples of parts that require maintenance or replacement include light emitting parts such as lasers, LEDs, and tubes, moving parts that wear due to sliding, parts that deteriorate due to chemical changes, and deterioration due to physical external forces such as impact. Is conceivable. Regardless of the measuring instrument, condition data that reflects the degree of deterioration of parts that require maintenance or replacement is recorded, condition data is collected by the server, and processing is performed based on the condition data collected by the server. Just do it.

Further, in the above embodiment, the case where the server is configured as one is described as an example, but the server is configured so that a plurality of physically separated devices cooperate to realize the function. May be good.

Further, in the above embodiment, the configuration in which the function for executing the contact movement distance accumulation process is incorporated in the control program for controlling the roundness measuring device 4 has been described as an example, but the contact movement distance accumulation process is described. The function to be executed may be stored in the RAM 62, ROM 64, or HDD 66 as a program separate from the control program, and may be executed by the CPU 60.

Further, in the above embodiment, the stylus 27 attached to the detector 26 is identified based on the user's input, but the identification information for identifying the stylus 27 can be visually, optically or magnetically read. The stylus 27 may be attached to each stylus 27 as data, and the attached stylus 27 may be automatically identified by reading the identification information by the roundness measuring device 4.

In addition, those skilled in the art appropriately adding, deleting, or changing the design of each of the above-described embodiments, and those in which the features of each embodiment are appropriately combined are also provided with the gist of the present invention. As long as it is, it is included in the scope of the present invention.

1 Measuring machine management system 2 Server 4 Measuring machine NW network

Claims (5)

A collecting means for collecting condition information indicating the state of replacement parts in each measuring device from a plurality of measuring devices, and a collecting means.
A prediction means for predicting the replacement time of the replacement part based on the condition information collected by the collection means, and a prediction means.
A measuring machine management system including a notification means for notifying a production department of information on a production plan of the replacement part based on a prediction result by the prediction means and an inventory amount of the replacement part. The measuring machine management system according to claim 1, wherein the notification means notifies a production department of information regarding a time and quantity in which the replacement part is required based on a prediction result by the prediction means. The measuring machine management system according to claim 1 or 2 , wherein the condition information is not the measurement data itself in the measuring device. The measuring device is a roundness measuring device, the replacement part is a stylus, and the condition information is a contact movement distance obtained by accumulating the distance traveled by the stylus in contact with an object to be measured. The measuring machine management system according to any one of claims 1 to 3. A program characterized in that a computer functions as the measuring machine management system according to any one of claims 1 to 4.

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